Although producers had lined up a trio of big names to pump up business this summer — including Gladys Knight, Natalie Cole and current guest star Patti LaBelle — the attention attracted with that casting didn’t prove enough to sustain the musical.

The $7 million tuner will shutter at a loss, before Knight or Cole get a chance to step in for their own stints in the tuner.

The season’s big Tony winner, “A Gentleman’s Guide to Love and Murder,” was another well-received fall opener that has had trouble attracting hit-level sales. But the awards love showered on that show, which emerged on top in the Tony race, is expected to fuel B.O enough to prolong its life expectancy considerably.